Electro-Harmonix Hot Tubes Overdrive
For your consideration, Garrett Park Guitars presents this Electro-Harmonix Hot Tubes Overdrive.
From the EHX website:
The Hot Tubes' unique pericyclic filter makes it a most versatile distortion device. From warm overdrive to vacuum tube Big Muff sustain to the heaviest metal tube-driven screams, you won't find a creamier distortion than the Hot Tubes. Powered by AC adapter and toroidal transformer that drives two Electro-Harmonix tubes to maximum voltage!